Steam-injector



(Model.) I

J. DESMOND.

STEAM INJBGTOR. No. 332,386. Patented Dec.. 15, 1885.

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UNITED STATES IPATENT. CFEICE.

JOHN EEsMOND, OE oLEvELA'ND, OHIO, AssIGNoE TO EOE sTEIHENs, OE DETROIT, MICHIGAN.

STEAM-iNJ ECTO R.

SPECIFICATION forming part of Letters Patent No. 332,386, dated December 15, 1885.

Application filed August 11, 1ERE'. Serial No. 174,128.

To @ZZ whom tm/ay concern:

Be it known that. I, JOHN DEsIIoNE, a citizen of the United States of America, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented certain new and useful Improvements in Steam-Injectors, of which the following is a specification, reference being had therein to the accompanying drawings.

My improvement has for its object to render the mechanism of steam -injectors less complex, and their operation in practice more efcient, while attaining` the minimum as to cost of production and it consists Ain the I5 peculiar construction, combination, and arrangement of its parts, substantially as hereinafter more fully shown and described, and pointed out in the claims.

In the accompanying drawings, Figure l is a 2O side elevation of my steam-injector. Fig. 2 is a longitudinal section, and Fig. 3 is a detail view thereof.

In the construction of my steam-injector, which comprises the sections A and A,Which are screwed together at A2, a male screw for this purpose being formed on the periphery of one section, and a corresponding female screw in the other section, I removably secure the steam-port B to section A by means of 3o pipe-coupling B, section A being provided with a threaded pipe-periphery at b. I also cast integral with section A the suction-pipe C, having threaded periphery at a for connecting thereto a well or Water-supply pipe by means of a pipe-coupling. The threaded extension A2 of the section A forms a seat for the valve-tube E, and against the edge of said extension a disk of said valve-tube is designed to impinge, as will appear further on. Cham- 4O ber D is comprised in section A,and has longitudinally disposed therein the tapered steamtube d, having rim d projecting against the lateral edge ofthe pipe-periphery b of section A, which effectually closes chamber D at one end, a transverse wall, e, being formed at the other end of said cha1nber,wherein is removably inserted the nipple f. Chamber D is provided with the transverse wall g, which (Model.)

Wall has a coincident aperture for the free play therein of slide-valve E. (See Fig. 3.) 5o Slide-valve E is tubular and provided with the small apertures E', and with a tapering passage, c', formed through its center. It is threaded at h for reception of the leather washer h and the nut ,With which washer h 55 is secured in position, and it is also provided with a metallic disk, j, cast integral therewith. Thus constructed, valve aperture 7c may be closed either by steam-pressure from the boiler, causing washer It to press against 6o Wall g and tube h to register with nipple f, or

by water-pressure, causing the metallic disk j to press against the end of the screw-threaded portion A2 of the section A.

F represents a steam-pipe leading into the steam-boiler, which is secured to the injector by means of pipe-coupling B2.

lThe operation is as follows: Steam being admitted through the steam-inlet port B and tapered tube D,slidevalve Eis closed by con- 7o densation,and water iiows through the suctionpipe C into chamber D, and is forced therefrom through the nipple f and the passage a oI" the slide-valve E into the boiler by the steam proceeding from the steam-port B, its admission being regulated by a globe-valve, (not shown,) until the boiler being thus supplied with water the surplus thereof flows out through the overflow-pipe F, whereupon the slide-valve Eis simultaneously forced forward, S0 thus opening aperture k and cutting off the water-supply.

Having thus fully described my invention, what I claim, and desire to secure by Letters Patent, isy l. A steam-injector consisting of the section A, having suction-pipe C, steam-tube d, and nipple f in wall e, and section A', having wall g, slide-valve E, and overflow-pipe F, substantially as shown, and for the purpose 9o described.

2. In a steam-injector, the slide-valve E, having washer h,and metallic disk j, disposed on either side of Wall g, substantially as shown, and for the purpose described. 9 5

3. The combination of slide-valve E, threaded extension A2 of section A,and chamber D', l In testimony whereof I affix my signature in having apertured wall g, substantially as presence of two Witnesses. shown, and for the purpose described.

4. The combination of section A, having JOHN DESMON D. 5 threaded extension A, slide-valve E, disposed in apertured Wall g of chamber D,and nipple Witnesses: f in wall e, substantially as shown and de- K ANDREW MCLELLAN, scribed. GEO. W. BORGMAN. 

